Cellulose's Repeating Unit Formula

Steps:

• Cellulose forms from β-D-glucose monomers linked by β-1,4-glycosidic bonds.
• Each glucose monomer has the formula C₆H₁₂O₆.
• Polymerization eliminates one H₂O molecule per bond, reducing each unit to C₆H₁₀O₅.
• The polymer chain repeats this unit n times, giving (C₆H₁₀O₅)ₙ.

Why C is correct:

• Cellulose's structure as a polysaccharide yields the repeating unit C₆H₁₀O₅ after dehydration synthesis, per standard biochemical formulas.

Why the others are wrong:

• A: Identical to C, serving as a duplicate distractor with the correct formula.
• B: Represents n separate glucose monomers (C₆H₁₂O₆)ₙ, not the linked polymer.
• D: Same as B, indicating unpolymerized glucose units without bond formation.

Final answer: C